... .0version 5.compliance withCE,ROSH. 4 Port USB HUB1. USB2.0 HUB with 4 port,every port can roll over2.Support data transfer ... . Extensively compatible with scanner, digital camera, digital vidicon, audio-system, display, U disk,5. 4 ports, and power up to 500mA ... 98/me/2000/xp/vista,Mac OS9.1 or higher Mini 4 Port USB HUB